export async function getCppToolsTestApi()

in testApi.ts [71:114]
37 lines of code
11 McCabe index (conditional complexity)

export async function getCppToolsTestApi(version: Version): Promise<CppToolsTestApi | undefined> {
    let cpptools: vscode.Extension<any> | undefined = vscode.extensions.getExtension("ms-vscode.cpptools");
    let extension: CppToolsTestApi | CppToolsTestExtension;
    let api: CppToolsTestApi | undefined;

    if (cpptools) {
        if (!cpptools.isActive) { 
            extension = await cpptools.activate();
        } else {
            extension = cpptools.exports;
        }
     
        if (isCppToolsTestExtension(extension)) {
            // ms-vscode.cpptools > 0.17.5
            try {
                api = extension.getTestApi(version);
            } catch (err) {
                // Unfortunately, ms-vscode.cpptools [0.17.6, 0.18.1] throws a RangeError if you specify a version greater than v1.
                // These versions of the extension will not be able to act on the newer interface and v2 is a superset of v1, so we can safely fall back to v1.
                let e: RangeError = <RangeError>err;
                if (e.message && e.message.startsWith("Invalid version")) {
                    api = extension.getTestApi(Version.v1);
                }
            }

            if (version !== Version.v1) {
                if (!api.getVersion) {
                    console.warn(`vscode-cpptools-api version ${version} requested, but is not available in the current version of the cpptools extension. Using version 1 instead.`);
                } else if (version !== api.getVersion()) {
                    console.warn(`vscode-cpptools-api version ${version} requested, but is not available in the current version of the cpptools extension. Using version ${api.getVersion()} instead.`);
                }
            }
        } else {
            // ms-vscode.cpptools version 0.17.5
            api = extension;
            if (version !== Version.v0) {
                console.warn(`vscode-cpptools-api version ${version} requested, but is not available in version 0.17.5 of the cpptools extension. Using version 0 instead.`);
            }
        }
    } else {
        console.warn("C/C++ extension is not installed");
    }
    return api;
}